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Bolts 6-32 x 3/4 Hx Hd MS St-zn (Jar 100)
Additional Notes
- Other sizes and quantities available by request
Manufacturer Resources
Product Specs
- Arra Compliant:
- C
- Buy American Compliant:
- C
- Dimensional Standard:
- ASME B18.6.3-2002
- Division:
- Electrical H1
- Drive Type:
- Slotted
- Fastener Head Type:
- Hex
- Fastener Head Width:
- 0.244 - 0.250 in.
- Fastener Height:
- 0.080 - 0.093
- Fastener Length:
- 4-Mar
- Fastener Width:
- 0.272
- Language Code:
- EN
- Order Minimum Imperial:
- 100
- Order Minimum Uom Imperial:
- CT
- Pack Type:
- Jar
- Product Group:
- Fasteners
- Product Height:
- 2.15 in
- Product Length:
- 3 in
- Product Weight:
- 159 g
- Product Width:
- 76.2 MM
- Sub Division:
- Electrical-E H2
- Thread Per Inch:
- 32
- Thread Pitch:
- 0.138
- Thread Standard:
- ANSI/ASME B1.1
- Thread Type:
- UNC
- Washer Od:
- 0.302 - 0.328 in.
- Department:
- Electrical
- Product Subgroup:
- Bolts
- Product Type:
- Hexagonal Bolt
- Type2:
- Hexagonal Bolt
- Series:
- JHHMS
- Product Finish:
- Zinc
- Product Details:
- Hexagonal Bolt
- Product Material:
- Steel
Metallics JHHMS81 – Frequently Asked Questions
1) What size and thread does the Metallics JHHMS81 machine screw have?
The JHHMS81 is a 6-32 x 3/4 inch slotted hex head machine screw. That's a #6 diameter with 32 threads per inch, Unified coarse (UNC), made to ANSI/ASME B1.1 for the thread and ASME B18.6.3-2002 for the head dimensions. If your panel or box is tapped 6-32, this threads straight in; it will not work in a #8-32 or 10-24 hole.
2) Can I drive these 6-32 hex head screws with a nut driver or do I need a screwdriver?
Either. The head is a slotted hex, so a flat blade works, and the hex is 0.244 to 0.250 inch across, which takes a 1/4 inch nut driver or socket. That matters in a crowded panel where you can't get a blade square on the screw but can drop a 1/4 inch driver over it.
3) Are these zinc plated steel screws OK for outdoor or damp locations?
These are zinc plated steel, which is a dry-location plating. It handles indoor panel, box and device work fine, but in wet locations, outdoors, or anywhere washdown or coastal salt is involved, go to a stainless 6-32 machine screw instead. Zinc will eventually bloom and seize in the tapped hole.
4) Do these 6-32 machine screws come with nuts or washers?
The jar is screws only, 100 pieces. No nuts or washers are packed with them. The head will seat a washer with a 0.302 to 0.328 inch outside diameter if you want to add one, which is a standard #6 flat or lock washer, and you'd order those separately.
5) Will these screws satisfy a Buy American or ARRA requirement on a federal job?
The JHHMS81 is flagged compliant for both Buy American and ARRA in Metallics' data, with country of origin China. On federally funded work, verify which clause your contract actually invokes, because the compliance flag and the origin need to be reconciled against the specific provision your spec cites.
6) What is the head profile height on these hex head screws, for tight clearance behind a cover?
Head height runs 0.080 to 0.093 inch, so it sits low, under a tenth of an inch above the surface. The head measures 0.244 to 0.250 inch across the hex. That low profile is why these get used under trim, plates and covers where a round or pan head would foul.
How fast can I get the Metallics JHHMS81 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
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Does the Metallics JHHMS81 come with a warranty?
Absolutely. The Metallics JHHMS81 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics JHHMS81?
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